Impact molding machine



April 21: 1925.

1,534,809 E. A.. RICH, JR

IMPACT MOLDING MACHINE Filed March 5. 1920 s sn E'ts' sheeti April 21, 1925 1,534,809

I E. A. RICH, JR

IMPACT MOLDING MACHINE Filed March 5. 1920 3 Sheets-Sheet z E. A. RICH. JR

IMPACT MOLDING MACHINE Filed March 5, 1920 Ann! 21, 1925.

3 Sheets-Sheet 5 Patented Apr. 21, 1925.

UNITED STATES 1,534,809 PATENT OFFICE.

ELMER A. RICH,.JR., F CHICAGO, ILLINO IS, ASSIGNOR- TO THE AMERICAN FOUNDRY, EQUIPMENT COMPANY, OF NEXV YORK, N Y., A CORPORATION OF OHIO.

IMPACT MOLDING MACHINE.

Application filed March 5, 1920. Serial No. 363,432;

T 0 all whom it mayconcern: 7

lie it known that I, ELMER A. Bron, Jr.,

a citizen of the United States, residing at. Chicago, in the county of Cook and State of Illinois, have mvented a certam new and:

useful Improvement in Impact. Molding Machines, of which the following is a full, clear. concise, and exact description. reference being had to the accompanying drawings, forming a part of this specificatioin My invention relates to molding machines for use in foundries, and particularly to molding machines adapted tothrow sand into a flask or mold. V

One of the objects of the invention. is to provide a simple and practical machine of. the character specified.

Another object of the invention is to arrange to throw the sand into the flask or mold with a substantial amount of force, so as to secure a packing orimpacting action.

Another object of the invention is to secure thisforceful throwing or impact action by means of gravity and also by means of centrifugal force. 1

Another object of the invention is to secure simplicity of construction and effectiveness-and efficiency of operation.

Other objects of the invention will appear and be set forth hereinafter.

In the accompanying drawings Fig. 1 is a side elevation of an impact molding machine embodying my present invention;

Fig. 2 is an end elevation of the same; and F 3 is a plan view of thesame.

eferring to the drawings I show a machine having a body frame 1 mounted on wheels 2-2. On this frame 1 is a small 3', which is to contain the mold or flask to receive the sand, said car being provided with wheels 4t running on tracks 5-5 on the body frame 1. V

A traveling conveyor is arranged and mounted on the machine body 1. This travcling conveyor preferably comprises sprocket chains 6--6 running over sprocket wheels 7'? mounted at the right hand end of the frame 1 (Fig. 1) and also on sprocket wheels 8--8 mounted at an elevation above the frame 1. The sprocket chains 6- 6 are provided withbuckets 9-9 adapted to carry sand. and this sand will be picked up from the floor on which the machine rests and travels and will be elevated by said buckets 9-9.

An arrangement is provided. for automatically packing the sand inv the buckets 99, the same preferably consisting of a swinging arm 10 pivotally mounted at 11 on a bracket 12 andhaving its free end provided with a roll 13 adapted to strike, against the sand in the buckets 9-9 and: compact the same. This roll 13- will fall on each bucket 9' as it advances and thereby pack the sand therein and each bucket will move the roll upwardly until it; passes out from under the same, whereupon the. roll. will drop and strike against the. sand in.

he next bucket.

An. arrangement is preferably provided for tightening the sprocket chains (S --63, the one shown consisting of sprocket wheels 14 mounted on adjustable bearings 16-16 which are arranged for adjustment between: side pillars or guideways 17 and 18 secured on inclined upwardly extending members 19-19 whose lower ends are attached to the body frame 1. Adjusting screws 20-20 provided to adjust the bearings 16-46 and thereby tighten the, sprockets 6-6.

At the upper end of the, traveling con,- veyor there is located a hood 21 adapted to cover the upper portion of said traveling conveyor. This hood 2:1 is provided with a downwardly extending chute 22 into which, sand is receivedv from the buckets 9-9 of. the traveling conveyor, this sand being dumped into the chute 22 as said buckets pass around the upper sprocket wheels 8-8.

At the lower endof' the chute 22 there is a rotary fan 23 having peripheral blades 24-, and this fan is arranged above the car 3 containing the flask or mold which is to: receive the sand. The chute 22 preferably has i s lower end provided with a cylindrical portion 25 which substantially surrounds the fan 24 and also has a chute portion 26 adapted to direct the sand from the fan 23 downwardly into the flask or mold. Thus the fan 23 throws the sand forcefully out ofthe cl-i-ute 26- and into the flask or mold and thus compacts the same.

As an arrangement for supplying power to drive the mechanisms above described, I provide an electric motor 27 which is mounted on an elevated platform 28, prefen ably in a housing 29-,-which is supported on the inclined members 19 previously referred to and also on vertical members -450. This motor 27 has a driving shaft 31 provided with a sprocket wheel 32 carrying a sprocket chain 33 which extends down and drives a sprocket 34 on a shaft 35. This shaft 35 is provided with a plurality of gears 36, 37, 38 and 39, which are loose on said shaft so as to permit the rotation of the shaft without rotating said gears. Between gears 36 and 37 is a clutch member 40, and between the gears 38 and 39 is a clutch member 41. The clutch member 40 is provided with side projections 42 and the gears 36 and 37 are provided with projections 43 and 44 respectively, adapted tobe engaged by the projections 42 on the member 40 when said member is moved to one side or the other. A handle 45 is pivotally mounted at 46 and arranged to control the member 40 so as to move the same to one side or the other to cause its engagement with either the gear 36 or gear 37. In a similar manner the gears 38 and 39 are provided with side projections 48 and 49, respectively, adapted to be engaged by the projections 47 and said member 41 is controlled by a lever or handle 50 pivotally mounted at 51.

The gears 36, 37, 38 and 39 are of different sizes, the gear 36 being the largest and the others being successively smaller.

These gears mesh with other gears 52, 53,

54 and 55 mounted on a rotary shaft 56 arranged at one side of the shaft 35. The shaft 56 may be driven at any one of four different speeds by manipulating either one of the handles 45 or 50 so as to throw one or the other of the clutch members 40 or 41 into engagement with one of the wheels 36, 37, or 38, 39.

The shaft 56 is arranged to drive the shaft 23 carrying the fan 23 by means of a sprocket chain 58 and sprocket wheels 59 and 60 on said shafts 56 and 23 respectively. Said shaft 56 is also arranged to drive the traveling conveyor or elevator by means of a sprocket chain 61 driven by said shaft 56through-asprocket 62 .on one end of said shaft 56, and. also by means of a sprocket 63 on a cross shaft 1 64 which latter drives the upper conveyor shaft 8 by a reduction :gearing comprising a large gear 66' on said shaft 8 a: small gear 67 on a supplemental. shaft68 and another small gear '69 on theshaft 64 carrying sprocket Thuspower is transmitted from the shaft 56 through sprocket chain 61 toshaft 64 and thence through gears 69, 67 and 66 to rotary shaft 8.

1 Thus it will be seen that the machine will be ableto collect sand from the floor and first elevate it and then throw itwith great forceinto theuflask or mold mounted on the machine frame. The motor may be started and then theimachine arranged to operate at any one of the four speeds desired by manipulating one of the handles 45 or 50, and when this is done the elevator will by means of the buckets 9 collect the sand from the floor or from elsewhere and lift it, discharging it into the hood 21 and thence downwardly into the chute 22 where it is deposited on the fan or impeller wheel 23 by which the sand is thrown at a high velocity by means of centrifugal force into the flask or mold.

lVhen the flask is sul'liciently filled the small car 3 may be moved so as to permit the removal of the flask and the replacement of the same by another flask. Thus the machine willnot only deposit the sand in the flask but will force it with such speed as to pack it therein.

It will be understood that changes and modifications may be made without departing from the spirit of the invention.

What I claim is:

1. A machine of the class specified comprising a traveling elevator, a chute at the top of the same extending downwardly from the upper end of said elevator, a centrifugal fan located at the lower end of the chute, and a motor having power transmitting connection with said elevator and fan for driving the same, said power transmitting connection comprising a sprocket drive running to the fan, and speed chang ing gears between said sprocket drive and said motor.

2. The combination of a traveling elevator arranged at an inclination to the vertical, a hood covering the upper end of said elevator and having a chute extending downwardly and at an inclination therefrom, a centrifugal fan located at the lower end of said chute, a downwardly extending spout by'which sand may be discharged from said elevator, a driving motor, a driven shaft having a sprocket connection with said motor, speed changing gears on said shaft, a driving shaft having gears meshing with said speed changing gears, a sprocket .drive between said last mentioned driving shaft and said fan, a sprocket drive between said shaft and a driving shaft on said elevator, and reduction gearing between said last mentioned driving shaft and the driving shaft of said elevator.

3. In combination, a frameanounted on wheels, an upstanding support, a conveyor carried. by the support anddischarging at theuppenend thereof, a continuous down-. wardly directed chute into which said conveyor discharges, centrifugal means at the lower end of saidchute for imparting speed to .the substance discharging therefrom, a travelling receptacleon said frame beneath the discharge end of said chute, a .motor above said chute,.sprocket. driving means connecting said motor and centrifugal means, sprocket driving means connecting said motor with said conveyor through reduction gearing, and speed change gearing between the motor and both of said sprocket driving means.

4. The combination with a travelling frame having an elevator thereon, a chute into which said elevator discharges, and r0- tary means in said chute for discharging the contents of the chute, of a prime mover on said frame, speed change gearing connected to said prime mover, sprocket driving means connecting said speed change gearing to said elevator, reduction gearing associated with said driving means, and a second independent sprocket driving means connecting said rotary discharge means with said change gearing.

5. In combination, a traveling elevator for lifting the sand, a chute having an inclined floor upon Which the elevator charges, a centrifugal fan below said inclined floor for increasing the discharge velocity of the sand, and a hood covering the upper end of said elevator and enclosing said fan.

6. In combination, a traveling frame having an elevator thereon and a chute into which said elevator discharges, rotary discharge means in said chute, a motor and speed change gearing connected thereto, sprocket driving means for said elevator connected to said speed change gearing, means connected to said gearing to drive said rotary discharge means, and reduction gearing interconnected between said sprocket means and elevator.

In Witness whereof, I hereunto subscribe my name this 3rd dav of February, A. D., 1920.

ELMER A. RICH, JR. 

